./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/bin/uautomizer-AkOaLMaTGY --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fd18c623be1f9191aaeb26a7b3c18eeb579e4f661e34cc28939d56ae6edd64a3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:13:36,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:13:36,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:13:36,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:13:36,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:13:36,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:13:36,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:13:36,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:13:36,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:13:36,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:13:36,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:13:36,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:13:36,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:13:36,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:13:36,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:13:36,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:13:36,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:13:36,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:13:36,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:13:36,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:13:36,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:13:36,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:13:36,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:13:36,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:13:36,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:13:36,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:13:36,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:13:36,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:13:36,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:13:36,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:13:36,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:13:36,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:13:36,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:13:36,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:13:36,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:13:36,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:13:36,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:13:36,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:13:36,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:13:36,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:13:36,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:13:36,415 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 08:13:36,475 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:13:36,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:13:36,477 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:13:36,477 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:13:36,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:13:36,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:13:36,480 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:13:36,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:13:36,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:13:36,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:13:36,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:13:36,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:13:36,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:13:36,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:13:36,484 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:13:36,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:13:36,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:13:36,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:13:36,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:13:36,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:13:36,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:13:36,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:13:36,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:13:36,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:13:36,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:13:36,488 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:13:36,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:13:36,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:13:36,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:13:36,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/bin/uautomizer-AkOaLMaTGY/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd18c623be1f9191aaeb26a7b3c18eeb579e4f661e34cc28939d56ae6edd64a3 [2021-11-07 08:13:36,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:13:36,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:13:36,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:13:36,862 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:13:36,863 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:13:36,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i [2021-11-07 08:13:36,995 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/bin/uautomizer-AkOaLMaTGY/data/f3717fd52/511e77a2ad41430598d5bde7d57a4b0d/FLAG6cd6e919d [2021-11-07 08:13:38,127 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:13:38,127 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i [2021-11-07 08:13:38,192 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/bin/uautomizer-AkOaLMaTGY/data/f3717fd52/511e77a2ad41430598d5bde7d57a4b0d/FLAG6cd6e919d [2021-11-07 08:13:38,408 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/bin/uautomizer-AkOaLMaTGY/data/f3717fd52/511e77a2ad41430598d5bde7d57a4b0d [2021-11-07 08:13:38,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:13:38,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:13:38,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:13:38,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:13:38,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:13:38,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:13:38" (1/1) ... [2021-11-07 08:13:38,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@218c1bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:38, skipping insertion in model container [2021-11-07 08:13:38,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:13:38" (1/1) ... [2021-11-07 08:13:38,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:13:38,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:13:39,915 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i[164502,164515] [2021-11-07 08:13:41,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:13:41,223 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:13:41,414 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i[164502,164515] [2021-11-07 08:13:41,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:13:41,974 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:13:41,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:41 WrapperNode [2021-11-07 08:13:41,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:13:41,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:13:41,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:13:41,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:13:41,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:41" (1/1) ... [2021-11-07 08:13:42,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:41" (1/1) ... [2021-11-07 08:13:43,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:13:43,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:13:43,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:13:43,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:13:43,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:41" (1/1) ... [2021-11-07 08:13:43,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:41" (1/1) ... [2021-11-07 08:13:43,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:41" (1/1) ... [2021-11-07 08:13:43,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:41" (1/1) ... [2021-11-07 08:13:44,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:41" (1/1) ... [2021-11-07 08:13:44,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:41" (1/1) ... [2021-11-07 08:13:44,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:41" (1/1) ... [2021-11-07 08:13:45,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:13:45,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:13:45,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:13:45,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:13:45,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:41" (1/1) ... [2021-11-07 08:13:45,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:13:45,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:13:45,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:13:45,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b88a67-cc35-4c4d-9356-8eb3cf7d1ffb/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:13:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 08:13:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 08:13:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:13:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 08:13:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:13:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-07 08:13:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:13:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 08:13:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 08:13:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 08:13:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:13:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:13:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:13:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:13:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:13:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:13:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:15:24,259 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:15:24,260 INFO L299 CfgBuilder]: Removed 3578 assume(true) statements. [2021-11-07 08:15:24,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:15:24 BoogieIcfgContainer [2021-11-07 08:15:24,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:15:24,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:15:24,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:15:24,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:15:24,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:13:38" (1/3) ... [2021-11-07 08:15:24,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb22289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:15:24, skipping insertion in model container [2021-11-07 08:15:24,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:41" (2/3) ... [2021-11-07 08:15:24,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb22289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:15:24, skipping insertion in model container [2021-11-07 08:15:24,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:15:24" (3/3) ... [2021-11-07 08:15:24,283 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i [2021-11-07 08:15:24,289 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:15:24,290 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 08:15:24,368 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:15:24,374 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 08:15:24,374 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 08:15:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 4082 states, 4080 states have (on average 1.4279411764705883) internal successors, (5826), 4081 states have internal predecessors, (5826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:24,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 08:15:24,494 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:24,495 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:24,496 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:24,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:24,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1722579056, now seen corresponding path program 1 times [2021-11-07 08:15:24,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:24,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058125772] [2021-11-07 08:15:24,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:24,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:25,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:25,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058125772] [2021-11-07 08:15:25,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058125772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:25,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:25,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:25,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666257461] [2021-11-07 08:15:25,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:15:25,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:25,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:15:25,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:25,605 INFO L87 Difference]: Start difference. First operand has 4082 states, 4080 states have (on average 1.4279411764705883) internal successors, (5826), 4081 states have internal predecessors, (5826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:28,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:28,336 INFO L93 Difference]: Finished difference Result 12063 states and 17238 transitions. [2021-11-07 08:15:28,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:15:28,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-07 08:15:28,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:28,430 INFO L225 Difference]: With dead ends: 12063 [2021-11-07 08:15:28,430 INFO L226 Difference]: Without dead ends: 7950 [2021-11-07 08:15:28,458 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:28,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7950 states. [2021-11-07 08:15:28,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7950 to 7950. [2021-11-07 08:15:28,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7950 states, 7949 states have (on average 1.3960246571895836) internal successors, (11097), 7949 states have internal predecessors, (11097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:28,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7950 states to 7950 states and 11097 transitions. [2021-11-07 08:15:28,918 INFO L78 Accepts]: Start accepts. Automaton has 7950 states and 11097 transitions. Word has length 29 [2021-11-07 08:15:28,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:28,919 INFO L470 AbstractCegarLoop]: Abstraction has 7950 states and 11097 transitions. [2021-11-07 08:15:28,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:28,920 INFO L276 IsEmpty]: Start isEmpty. Operand 7950 states and 11097 transitions. [2021-11-07 08:15:28,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 08:15:28,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:28,930 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:28,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:15:28,931 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:28,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:28,935 INFO L85 PathProgramCache]: Analyzing trace with hash 680382544, now seen corresponding path program 1 times [2021-11-07 08:15:28,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:28,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356538798] [2021-11-07 08:15:28,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:28,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:29,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:29,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356538798] [2021-11-07 08:15:29,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356538798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:29,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:29,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:15:29,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653457057] [2021-11-07 08:15:29,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:15:29,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:29,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:15:29,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:15:29,424 INFO L87 Difference]: Start difference. First operand 7950 states and 11097 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:30,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:30,975 INFO L93 Difference]: Finished difference Result 23734 states and 33164 transitions. [2021-11-07 08:15:30,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:15:30,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-07 08:15:30,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:31,094 INFO L225 Difference]: With dead ends: 23734 [2021-11-07 08:15:31,094 INFO L226 Difference]: Without dead ends: 15836 [2021-11-07 08:15:31,120 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:15:31,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15836 states. [2021-11-07 08:15:31,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15836 to 15740. [2021-11-07 08:15:31,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15740 states, 15739 states have (on average 1.3973568841730732) internal successors, (21993), 15739 states have internal predecessors, (21993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15740 states to 15740 states and 21993 transitions. [2021-11-07 08:15:31,715 INFO L78 Accepts]: Start accepts. Automaton has 15740 states and 21993 transitions. Word has length 32 [2021-11-07 08:15:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:31,717 INFO L470 AbstractCegarLoop]: Abstraction has 15740 states and 21993 transitions. [2021-11-07 08:15:31,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 15740 states and 21993 transitions. [2021-11-07 08:15:31,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-07 08:15:31,746 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:31,747 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:31,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:15:31,749 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:31,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:31,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1708768980, now seen corresponding path program 1 times [2021-11-07 08:15:31,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:31,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932445775] [2021-11-07 08:15:31,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:31,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:32,208 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 08:15:32,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:32,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932445775] [2021-11-07 08:15:32,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932445775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:32,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:32,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:32,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921260002] [2021-11-07 08:15:32,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:15:32,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:32,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:15:32,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:32,222 INFO L87 Difference]: Start difference. First operand 15740 states and 21993 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:33,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:33,122 INFO L93 Difference]: Finished difference Result 44306 states and 61917 transitions. [2021-11-07 08:15:33,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:15:33,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-07 08:15:33,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:33,249 INFO L225 Difference]: With dead ends: 44306 [2021-11-07 08:15:33,249 INFO L226 Difference]: Without dead ends: 28623 [2021-11-07 08:15:33,285 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:33,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28623 states. [2021-11-07 08:15:34,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28623 to 27508. [2021-11-07 08:15:34,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27508 states, 27507 states have (on average 1.3987712218707966) internal successors, (38476), 27507 states have internal predecessors, (38476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:34,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27508 states to 27508 states and 38476 transitions. [2021-11-07 08:15:34,211 INFO L78 Accepts]: Start accepts. Automaton has 27508 states and 38476 transitions. Word has length 117 [2021-11-07 08:15:34,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:34,212 INFO L470 AbstractCegarLoop]: Abstraction has 27508 states and 38476 transitions. [2021-11-07 08:15:34,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:34,212 INFO L276 IsEmpty]: Start isEmpty. Operand 27508 states and 38476 transitions. [2021-11-07 08:15:34,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 08:15:34,237 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:34,238 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:34,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:15:34,239 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:34,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:34,240 INFO L85 PathProgramCache]: Analyzing trace with hash 410986585, now seen corresponding path program 1 times [2021-11-07 08:15:34,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:34,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341424741] [2021-11-07 08:15:34,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:34,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 08:15:34,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:34,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341424741] [2021-11-07 08:15:34,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341424741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:34,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:34,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:34,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069102702] [2021-11-07 08:15:34,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:15:34,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:34,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:15:34,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:34,620 INFO L87 Difference]: Start difference. First operand 27508 states and 38476 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:36,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:36,331 INFO L93 Difference]: Finished difference Result 76250 states and 106840 transitions. [2021-11-07 08:15:36,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:15:36,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 08:15:36,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:36,488 INFO L225 Difference]: With dead ends: 76250 [2021-11-07 08:15:36,488 INFO L226 Difference]: Without dead ends: 48799 [2021-11-07 08:15:36,541 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48799 states. [2021-11-07 08:15:38,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48799 to 48640. [2021-11-07 08:15:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48640 states, 48639 states have (on average 1.4030716092024917) internal successors, (68244), 48639 states have internal predecessors, (68244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:38,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48640 states to 48640 states and 68244 transitions. [2021-11-07 08:15:38,579 INFO L78 Accepts]: Start accepts. Automaton has 48640 states and 68244 transitions. Word has length 125 [2021-11-07 08:15:38,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:38,580 INFO L470 AbstractCegarLoop]: Abstraction has 48640 states and 68244 transitions. [2021-11-07 08:15:38,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:38,581 INFO L276 IsEmpty]: Start isEmpty. Operand 48640 states and 68244 transitions. [2021-11-07 08:15:38,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-07 08:15:38,627 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:38,628 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:38,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:15:38,629 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:38,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:38,629 INFO L85 PathProgramCache]: Analyzing trace with hash -491023878, now seen corresponding path program 1 times [2021-11-07 08:15:38,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:38,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317488915] [2021-11-07 08:15:38,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:38,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:39,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:15:39,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:39,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317488915] [2021-11-07 08:15:39,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317488915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:39,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:39,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:39,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613717825] [2021-11-07 08:15:39,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:15:39,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:39,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:15:39,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:15:39,078 INFO L87 Difference]: Start difference. First operand 48640 states and 68244 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:42,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:42,618 INFO L93 Difference]: Finished difference Result 207772 states and 291264 transitions. [2021-11-07 08:15:42,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:15:42,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-07 08:15:42,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:43,088 INFO L225 Difference]: With dead ends: 207772 [2021-11-07 08:15:43,089 INFO L226 Difference]: Without dead ends: 159189 [2021-11-07 08:15:43,177 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:15:43,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159189 states. [2021-11-07 08:15:46,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159189 to 81464. [2021-11-07 08:15:46,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81464 states, 81463 states have (on average 1.401691565495992) internal successors, (114186), 81463 states have internal predecessors, (114186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:46,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81464 states to 81464 states and 114186 transitions. [2021-11-07 08:15:46,482 INFO L78 Accepts]: Start accepts. Automaton has 81464 states and 114186 transitions. Word has length 144 [2021-11-07 08:15:46,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:46,483 INFO L470 AbstractCegarLoop]: Abstraction has 81464 states and 114186 transitions. [2021-11-07 08:15:46,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:46,484 INFO L276 IsEmpty]: Start isEmpty. Operand 81464 states and 114186 transitions. [2021-11-07 08:15:46,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 08:15:46,537 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:46,538 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:46,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:15:46,538 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:46,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:46,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1969985934, now seen corresponding path program 1 times [2021-11-07 08:15:46,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:46,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547645450] [2021-11-07 08:15:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:46,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:15:46,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:46,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547645450] [2021-11-07 08:15:46,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547645450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:46,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:46,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:46,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048550232] [2021-11-07 08:15:46,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:15:46,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:46,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:15:46,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:15:46,929 INFO L87 Difference]: Start difference. First operand 81464 states and 114186 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:55,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:55,153 INFO L93 Difference]: Finished difference Result 371876 states and 520974 transitions. [2021-11-07 08:15:55,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:15:55,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-11-07 08:15:55,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:55,928 INFO L225 Difference]: With dead ends: 371876 [2021-11-07 08:15:55,929 INFO L226 Difference]: Without dead ends: 290469 [2021-11-07 08:15:56,086 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:15:56,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290469 states. [2021-11-07 08:16:02,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290469 to 158960. [2021-11-07 08:16:02,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158960 states, 158959 states have (on average 1.4012040840719935) internal successors, (222734), 158959 states have internal predecessors, (222734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158960 states to 158960 states and 222734 transitions. [2021-11-07 08:16:03,244 INFO L78 Accepts]: Start accepts. Automaton has 158960 states and 222734 transitions. Word has length 145 [2021-11-07 08:16:03,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:03,245 INFO L470 AbstractCegarLoop]: Abstraction has 158960 states and 222734 transitions. [2021-11-07 08:16:03,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:03,246 INFO L276 IsEmpty]: Start isEmpty. Operand 158960 states and 222734 transitions. [2021-11-07 08:16:03,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-07 08:16:03,293 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:16:03,294 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:03,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:16:03,294 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:16:03,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:03,295 INFO L85 PathProgramCache]: Analyzing trace with hash 951241694, now seen corresponding path program 1 times [2021-11-07 08:16:03,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:03,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424819379] [2021-11-07 08:16:03,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:03,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:03,626 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:16:03,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:03,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424819379] [2021-11-07 08:16:03,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424819379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:16:03,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:16:03,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:16:03,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961389058] [2021-11-07 08:16:03,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:16:03,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:03,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:16:03,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:16:03,630 INFO L87 Difference]: Start difference. First operand 158960 states and 222734 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)